How to Make an AI Avatar Video
A practical 2026 path: write a presenter script, pick Synthesia for studio-grade talking heads or Synthesys for a voice+avatar bundle — they are different companies — generate on a commercial-rights plan, and disclose synthetic video when YouTube asks. Built from each vendor's live pricing and docs (August 2026) plus the same rubric we use in the avatar reviews.
Most “make an AI avatar video” posts skip the two facts that actually decide the project. First: a presenter talking to camera is not cinematic generative video, and it is not a voice-clone job. Second: the two tools this site can send you to with a live affiliate desk — Synthesia and Synthesys — are different companies with incompatible meters. This guide is the working path for a YouTube explainer: script, company, avatar, voice, QC, disclose.
When you need an avatar — and when you don't
Use an avatar when the channel needs a face on camera and you cannot or will not book talent, lights, and a re-shoot every time the script changes. Product explainers, course lessons, internal-style training you publish publicly, and faceless-channel talking heads are the fit. Edit the script, re-render, done.
Skip the avatar if you only need a voice — that is how to clone your voice for YouTube, and a stock studio narrator is often cheaper. Skip it if you wanted blocking, action, or a cinematic shot: Synthesia is locked to presenter framing, and Synthesys’ frontier text-to-video models are a different meter inside the same bundle, not a reason to treat the avatar as a film camera.
The seven-step YouTube avatar
- 01
Write a presenter script, not a cinema treatment
An AI avatar video is a person talking to camera. Write the explainer the way you would brief a presenter: short sentences, one idea per beat, names and numbers spelled the way they should be said. If you wanted blocking, action, or generative b-roll, you are in the wrong category.
- 02
Confirm you actually need an avatar
Use an avatar when the channel needs a face and you cannot or will not book a studio day. If you only need a voice, clone or stock VO is cheaper — that is the voice-clone guide. If you need cinematic motion, that is a generative-video model, not a presenter tool.
- 03
Pick the company that matches the job — they are not the same
Synthesia (synthesia.io) is the studio-grade presenter platform: stable avatars, localization, and governed explainers. Synthesys (synthesys.io) is a different company selling a voice + avatar + generative-video bundle. Mixing the names is the expensive mistake this page exists to prevent.
- 04
Choose stock vs personal / custom avatar
Stock presenters are enough for a first YouTube explainer. Synthesia personal avatars sit on paid plans; a Studio Express-1 avatar is listed as a $1,000/year add-on and can take up to ten days. Synthesys digital twins are a first-class slot (5 / 15 / unlimited by plan). Do not buy a custom likeness until a stock avatar has survived a headphone watch on a real script.
- 05
Attach a voice on a commercial-rights plan
Synthesia's voice layer exists to serve the avatar — 160+ languages and voices, cloning paired with a custom avatar. Synthesys includes clone slots on every paid tier and states full commercial rights on paid plans. Free-tier output is an audition. Monetized YouTube needs a paid plan before you export.
- 06
Generate, then QC mouth-sync, names, and the first second
Re-render is the product: edit the script, generate again, skip the studio re-book. Watch the first second, proper nouns, and numbers. Mouth-sync is consistently strong in English and major European languages; budget a native-speaker pass outside that set. Hand gestures still loop. These are narrators, not actors.
- 07
Export and disclose synthetic content on upload
Export on the plan that grants the rights you need. YouTube Studio asks you to flag realistic altered or synthetic content — check the current upload flow and disclose when it applies. That is separate from the vendor license. You need both.
Which company actually makes the explainer in 2026
This is the part most roundups blur. “AI avatar tool” is a search, not a product. Synthesia made a corporate presenter system. Synthesys made a creator bundle. Pricing and access below match each vendor's live pages as of August 2026.
| Criterion | Synthesia | Synthesys |
|---|---|---|
| Company / domain | Synthesia — synthesia.io (unrelated to Synthesys) | Synthesys — synthesys.io (unrelated to Synthesia) |
| Core job for a YouTube explainer | Studio-grade presenter talking to camera | Voice + avatar + generative clips on one bill |
| Who it is built for | Training, explainers, and teams that need a governed presenter | Solo creators and faceless channels who want one subscription |
| Stock avatars | 125+ Starter / 180+ Creator / 240+ Enterprise | 200 stock video avatars on every published plan |
| Custom / personal avatar | Personal avatars on paid plans; Studio Express-1 is a $1,000/yr add-on | Digital twins: 5 Indie / 15 Studio / unlimited Agency |
| Voice & cloning | 160+ languages & voices; cloning paired with a custom avatar | Clone slots on every paid tier (10 → 25 → unlimited) |
| Free tier | Basic $0/mo — 9 avatars, 10 min video/mo; downloads start on Starter | None on the published pricing page |
| Cheapest paid plan | Starter $29/mo, or $18/mo billed yearly ($264/yr) | Indie $29/mo, or $20/mo billed yearly ($240/yr) |
| How usage is metered | Shared credits + video minutes (10 min/mo Starter; 30 min/mo Creator) | Video credits (1,000 / 2,500 / 5,400) covering the whole suite |
| Commercial rights | Subscription output; confirm current terms for paid-media / client use | Full commercial rights stated on every paid plan |
| Best YouTube fit | Polished explainer or training-style talking head | Faceless-channel explainer that also needs VO and ad variations |
Synthesia
Stable talking-head avatars, a real free Basic plan, and the script-edit-to-re-render loop. The default when the explainer has to look like a studio booking.
Synthesys
Avatars, clone slots, and generative clips on one credit pool. The pick for a faceless channel that also needs the voiceover.
Synthesia — the studio presenter
You write a script, pick a stock or personal avatar, generate, then edit the script and re-render instead of re-booking a studio. On a head-and-shoulders framing the stock avatars are convincing — blink cadence, micro head-tilt, mouth-sync in English and major European languages. Hand gestures loop. Full-body action is not the point. Emotional range is narrow. These are narrators. That is the product.
The 2026 pricing page puts that on a credit-plus-minutes meter. Basic is $0 with 9 avatars and 10 minutes a month — downloads and logo removal start on Starter. Starter is $29/month (1,200 credits, 10 minutes of video or dubbing, 125+ avatars) or $18/month billed yearly ($264/year per the FAQ). Creator is $89/month (3,600 credits, 30 minutes, five personal avatars, API) or $64/month yearly. Unused minutes do not roll over. Enterprise is where 1-click translation, SCORM, SSO, and brand kits live. Languages and voices are published as 160+ on every tier. Full breakdown in our Synthesia review.
For a YouTube explainer, start on Basic with a real script. Go to Starter only if you need a clean download. Do not buy Creator for “more cinema” — you get more minutes, personal avatars, and API, not a different shot language. Confirm commercial terms on the plan you will export from if the video will run ads or go to a client.
Synthesys — the value bundle, not a cheaper Synthesia
Synthesys is a different company. It puts AI voiceovers, Humatar / digital-twin avatars, frontier text-to-video models, and images on one credit balance so a solo creator does not stack four subscriptions. Every published plan includes commercial rights with no royalties or attribution. Indie starts at 1,000 video credits, 10 voice-clone slots, and 5 digital twins. That is the reason to pay — breadth — not beating Synthesia on a presenter close-up.
Avatar polish trails Synthesia on a brand-reviewed talking head. Voice realism still trails a specialist. The pages also disagree with themselves on voice/language counts and on the annual discount (30% banner vs a 40% / “~$17/mo” FAQ). We report the pricing grid: Indie $29 / Studio $59 / Agency $119 monthly, displaying $20 / $41 / $83 on the yearly toggle. There is no free plan on that page. Frontier-model rows burn credits far faster than standard avatar renders. Start monthly and measure a real episode. Full breakdown in our Synthesys review.
If the YouTube plan is a faceless explainer plus VO plus the occasional generative clip, Synthesys is the closer fit. If the plan is one polished presenter video a week that has to survive a legal pass, it is the wrong buy. Do not treat it as a discount code for Synthesia.
Voice, custom likeness, and the YouTube disclosure
A cloned line or a custom face you generated on a free plan is an audition, not an asset. Synthesia grants downloads from Starter; Basic is the test. Synthesys states full commercial rights on every paid plan and lists no free tier. If the video will run ads, sit on a paid plan before you export. Confirm Synthesia’s current terms for paid-media and client use — we do not invent a license the pricing page does not spell out as “full commercial rights.”
Only clone a voice or build a digital twin you have the right to use. Clone yourself, or get written consent. Platform terms and replica laws are not theoretical. The voice-clone path — recording, Instant vs Professional, commercial-rights gates — is documented in How to clone your voice for YouTube.
YouTube’s upload flow asks creators to disclose realistic altered or synthetic content — the current Studio checkbox / disclosure, not a blog post from last year. Use it when the presenter is a realistic replica. That is separate from the vendor license. You need both.